The Mastic Doctor team standing beside their branded vans outside an office building
Hampshire · England

Expansion Joint Sealing in Exton

Expansion and movement joint sealing in walls, decks and floors throughout Exton and nearby, by CSCS-carded applicators. CHAS accredited and fully insured.

  • Chipped joint edges on forklift routes
  • Joints where the bead has lost adhesion
  • Debris jammed in movement joints
1
Send details
Photos, drawings or a schedule, or we visit.
2
Get a quote
A fixed price, with what’s included set out clearly.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
London, the South East & Scotland
CHAS & Constructionline
Fully insured: £5m PL

Expansion joint sealing in Exton

Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.

About our expansion joint sealing in Exton

Few joints take as much punishment as those in a car park. Tyres load the edges, and de-icing salts and water work into any gap, so failed seals soon lead to leaks onto the level below and broken edges. We reseal deck and ramp joints with a trafficable sealant chosen for the movement and the work can be phased so parts of the car park stay open. Most enquiries involve chipped joint edges on forklift routes and torn sealant in brick or block movement joints, on precast concrete panel joints, podiums and floor movement joints and blockwork control joints. Searching for sealant specialists in Exton? We have been sealing commercial buildings since 2005.

Jobs around smaller places like Exton are planned so the whole job is done in one visit. Note joint widths and the traffic that uses them, and we’ll take it from there.

Every job is signed off with a 12-month guarantee. The promise is simple: if the work we did fails within twelve months, we return to fix it.

Where
Exton (SO32)
Region
Hampshire
Guarantee
A 12-month guarantee
Quote
Fixed quote, scope in writing
Phone
01277 525 020
Page updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Your questions answered

Is Exton off your patch?

Not at all: smaller places are covered as well as towns. Our area covers London and the South East counties. Send photos and a list of what needs doing, and we’ll plan the job to need as few trips as possible.

What paperwork can you provide for a job in Exton?

RAMS, insurance certificate, CSCS details: list what the site needs and we will confirm it with the quote. Our applicators are CSCS-carded, and we carry £5m public liability insurance.

Is colour matching possible?

It depends on the product specified. Some ranges offer many colours, others very few, so the available colours are confirmed with the quote.

When can you be on site?

Mention the site’s hours and access windows in your enquiry, and we’ll schedule the work to suit. You can reach the office between 8am and 5pm, Monday to Friday.

Can a joint be sealed if the edges are broken?

Sealant needs sound faces to bond to, so broken or crumbling edges have to be repaired first. Where it’s visible beforehand, we will say so when we quote.

Which sealant will you use?

A specification, where there is one, decides it. Without one, the joint decides: how much it moves, what it bonds to and whether it’s wet, trafficked or fire-rated.

Is any job too small?

Small jobs are welcome alongside larger packages. Send details for a fixed quote.

Why act early in Exton

Closing a car park for a reseal is rarely an option. Work can be planned so parts of the deck stay open without shutting the whole car park. Tell us what has to stay open and we will plan around it. Around Exton, it’s better to renew all the failing joints at once. Send photos of each area and we’ll quote for the lot.

There’s no price list, since every building and every scope is different. Call for a quote.

Why us?

  • Public liability insurance in place
  • One phone line for London, the South East and Scotland
  • Our applicators hold CSCS cards
  • Workmanship guaranteed for 12 months

Read how commercial sealant jobs are priced and how we’re accredited.

From enquiry to sign-off

Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. The work itself usually takes a day or so for a modest run of joints, and longer where decks, ramps or floors are done in phases, and we clear our waste as we work. Rural sites near Exton may need directions, gate codes or a contact on site. Add it to your enquiry and we will build it into the plan.

  1. We look at the joints, their width and how they’ve failed.
  2. You get a fixed quote with the product and its movement capability stated.
  3. The failed seal is removed and both faces are cleaned until sound and dry, and we tell you if any edges need repairing first.
  4. We control the depth with backing rod or, in shallow joints, bond-breaker tape.
  5. Where the maker calls for primer, it’s applied first, then the bead goes in and is tooled to a concave finish.
  6. Each joint is inspected and handed over with our 12-month guarantee.

Getting the site ready

  • Tell us your opening times and when work is allowed
  • Agree which areas must stay open
  • Tell us what induction or permit system the site runs

Request a quote

A good quote starts with a clear picture: what’s there, how much of it, how we reach it and what’s specified. Share whatever details you have and we’ll fill any gaps with a visit.

Get a price

Read more

What we can’t put right

Honesty saves time and money. Fresh joints won’t solve:

  • A joint that has to be widened or re-detailed before it can work
  • Mechanical expansion joint covers, cover plates or proprietary joint systems (a specialist supplier’s job)
  • Crumbling edges that would give a new bead nothing sound to grip

Not sure which it is? You can ring 01277 525 020 or email drawings and photos and we will tell you honestly before you book.

Where we work in Exton

  • Precast concrete panel joints
  • Cladding panel joints
  • Podiums and floor movement joints
  • Blockwork control joints
  • Brickwork movement joints
  • Car park decks and ramps

Common problems we fix in Exton

Most movement joint failures come down to the joint stretching further than the sealant can take. Cohesive failure, a split through the centre, normally means the joint or product wasn’t right for the movement. Resealing like for like often fails the same way unless width and product are reviewed.

Site and facilities staff are often the first to spot these:

  • Torn sealant in brick or block movement joints
  • Spalled or broken joint edges in floors and decks
  • Sealant pulling off the joint face
  • Debris jammed in movement joints

Around Exton, each joint gets a filler or sealant matched to what crosses it and how much it moves.

Comparing quotes

  • What level of public liability insurance do they hold?
  • Will CSCS-carded applicators be on site?
  • How long is the guarantee, and what does it include?
  • Whether old or failed sealant will be cut out, not overlaid

How to choose a sealant contractor

Traffic, movement and joints around Exton

Exton is in the South East, one of the UK’s drier regions. External slab and deck joints still need a dry, clean joint to seal, and winter de-icing salt on car parks and ramps works into any open joint. At about 57 miles from central London, Exton is within reach of the capital. The South East has large numbers of industrial estates and warehouses along the motorway corridors.

Schools like Meonstoke Church of England Infant School often have long brick elevations with movement joints that age quietly.

Exton is about 7 miles north-west of Horndean, in Hampshire. Exton sits inside our coverage, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Across Hampshire, 723 places are covered, Exton among them. Sites around Southampton have their own page, roughly 12 miles from Exton.

If you need expansion joint sealing in SO32, the process matches everywhere else we work: send details, get a quote, we seal, guaranteed. Buildings on Shoe Lane, Church Lane and Beacon Hill Lane are within our area. If your building is just outside Exton, we cover Corhampton (1 mile south), Meonstoke (1 mile south), Brockbridge (1 mile south), Droxford (2 miles south) and Soberton (3 miles south). Nearby towns on our patch include Winchester (10 miles north-west), Gosport (12 miles south), Havant (10 miles south-east), Eastleigh (10 miles west), Fareham (10 miles south) and Horndean (7 miles south-east).

Landmarks near Exton

In Exton, that means premises near The Shoe Inn. Open spaces near Exton include St Clair's Meadow and Beacon Hill.

Map of Exton © OpenStreetMap contributors

Maintenance after handover

Keep the joints in good shape with a few simple steps:

  • Treat a small split as a warning, not a cosmetic issue
  • Leave barriers in place until fresh joint sealant has cured
  • Keep stones and debris out of open joint lines
  • Raise snow-clearing blades over deck joints where possible

Debris does more harm to joint sealant than most people realise. Grit trodden or driven into the joint works at the surface until it tears. Regular sweeping keeps joint lines clear.

When one joint fails, others of the same age are rarely far behind. It pays to check every joint, not just the obvious one so you can prioritise and budget. We’ll tell you which movement joints need doing now and which can wait.

General trades versus a specialist

General builders and handymen seal joints, but it isn’t their main trade. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint.

Putting right a botched joint often costs more than sealing it well at the start, since all of it has to come out and the faces be cleaned back again. That’s why many clients bring in a specialist from the beginning.

Accreditations

Trusted. Accredited. Insured.